.R21 File

The r21 file extension is associated with WinRAR. Its one part of a multi-volume compressed RAR archive.

Some RAR files can be parts of a multi-volume sequences. In WinRAR you can split a huge archive to a few smaller files, which are called volumes.

Older versions of WinRAR used either:

• rar or exe (SFX) for first volume
• r01, r02, r03 ....etc. for any additional volumes

Or:

• rar or exe (SFX) for first volume
• 001, 002, 003 ....etc. for any additional volumes

The newer versions of WinRAR are using:

• rar or exe (SFX) for first volume
• .part1.rar, .part2.rar, part3.rar ....etc. for any additional volumes

In order to unpack the multi-volume RAR archive, you need to place ALL of the split parts in the same directory and start extraction of the first volume. The program will automatically use all of the parts to extract the content of the archive.

Files with r21 extension are mainly RAR archives, or rather it is one part of a big RAR archive. You will need all the parts in order to extract the data.

How to open:

The *.r21 file is only one part of RAR multi-volume archive. If you want to extract this file, you must have all parts of the RAR multi-volume archive. Open the first part of RAR (*.rar file) multi-volume archive in WinRAR application and extract files from RAR multi-volume archive.

How to convert:

It is not possible to convert only one part of RAR multi-volume archive. Only complete RAR archive can be converted in to another archive or compression format. The easiest way how to convert complete RAR multi-volume archive is to decompress the RAR archive with the use of WinRAR and repack the content with another compression or archive application of your choice.